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This tutor has a problem. When presented with a new test, people naturally have a short but significant cognitive lag until they clue into what they should be typing. But this tutor's timer starts immediately, including the lag. As a result, if used as a speed test, the tutor's measurement of typing speed is very inaccurate.

The basic issue here is the length of the word string. Normally speed tests have long documents, and as a result the cognitive start-up lag is a constant lost in the noise. But with a very short word string the lag is perhaps as much as a third of the allotted typing time.




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